this car lost control. this afternoon, skaters took the fall in temperatures with ease. >> it is cold, but you get warm by moving. >> there she is, i don't want to break my bones. just watching. >> reporter: the father came into town with his daughter for the fireworks and remembers last year, a wet, and rainy san francisco. >> we came from odessa just to be here. >> it's cold here. >> reporter: tomorrow will be the bay area's first spare the air day of the season, as opposed to last year's 11 alert. >> we've had a lot of wet, unsettled weather this year, which has helped air quality a great deal. last year, we had a dry, cold winter, and it made for unhealthy air quality. >> reporter: this -- in walnut creek, jane hernandez, ktvu, channel 2 news.